Dewaterer and classifier.



0. A. SUNDNESS 6; i? M. BAKER.

DEWATERER AND CLASSIFIER.

APPLICATION FILED MAR. 19. 1am.

Patented Aug. 6, 1918.

amventom liquid and the solids to travel downward DEWATERER AND ctAssIrniR.

Application filed March 16, 191 serial No. 222,925.

To all whom it may concern:

Be it known that we, ODIN A. SUNDNESS and ROY M. BAKER, citizens ofthe United States, residing at Chisholm, in the county of St. Louis and State ofMinnesota, have invented certain new and useful Improvements in Dewaterers and Classifiers, of

which the following is a specification.

This invention relates to an improvement in dewaterers and classifiers, and an object 'of'the invention is to provide, a'series of receptacles so related that the liquid introduced into the initial or first receptacle w1ll cause a separation of the heavy particles from the liquid and allow the liquid and line w'wof Fig. 1.

lighter particles to pass therefrom into the next receptacle where a further separation 'I will take place and so on until the liquid has passed through all of the receptacles.

' Theinvention consists of aplurality' of hollow cone-shaped members interfitted with a sufiicient space therebetween to allow liquid to circulate therebetween, and connected to the'bases of each of said cone mem- Each of y the cone members has an openingat the apex bers is an inverted cone member.

thereof and received in each of the cone members is a hollow frustum cone-shaped member or baifie. By this arrangement of the cone members liquid containing solids from an ore dressing plant maybe introduced into the innermost cone-member under a suitable pressure, the liquid and the solids will be directed upwardly in the cone member against the baflie therein which will cause the into the inverted-cone member connected to said cone-member, the heavy. particles or solidsfalling into the inverted cone memben and the liquid and lighter particles passing through the opening at the top of I .the cone-member into the next cone member. j The liquid and lighter particles entering the next cone-member will be received within the bafile and be deflected downwardly causing a further separation of the particles from the liquid. This-process is continued throughout the series of conei'ncmbers. "It is to be noted that the velocity of the liquid will be decreased onthe area throughout which it flows,- and as it flows from one cone-member to another the ve- Specifioation of Letters Patent.

the invention; and V suitable source or receptacle."

Patented Aug. "6,1918.

lo city is constantly decreasing, so that the particles carried in suspension will beigradually separated depending upon the specific gravity of the material in suspension. The iinverted cone members will,therefore, each receive a grade of material due to the specific gravity of the particles carried by the liquid.

The invention consists" of certain novel features of constructlon and comblnations of and pointedoutin the claims In the accompany ng draw ngs Figurel' 1s a vert1cal. sect onal view of parts which will jbe hereinafter described Fig. 2 is a horizontal; sectional view on In the drawings, 1,2; ig represent.

a'plurality of receptacles of varying sizes, j the receptacles being received one'within the other, and the receptacle {l beinglthe' smallest and innermost receptacle. 3 Each receptacleconsists ofacone-membfifd, andan inverted cone-member 72, the twocone mem- I bers of each receptacle being. connected together, at their inner ends an annular I band 5.

The cone-members a, are each provided" at their apexes with an outlet openingfi. V The outermost receptacle lhas a pipei connected to'the apex thereof and incominunication with the outlet opening 6 for'the purpose of conducting the clarified water or liquidto Received and suitably supported within the cone-members a of each receptacle are hollow frustum cone baflies 8. "The bafiles or water: and theparticlescarried thereby 'may pass freely and be discharged through the outlet opening 6 1nto the nextreceptacle.

f feed pipe '9 leading from atank.or "other ,receptacle' 10 extends. through7the bands 5 of thereceptacles into the receptacle 4 and discharges the liquid with'fits solids to be classified or purified. To the'bottom of each inverted cone member-b, of the several receptacles connected a pipe" 11 for the discharge of the contents of the receptacles. "A suitable cut-ofi' valve 12-is provided for "are so arranged within the cone members thatfa suitable passage is formed between the outer surfaceofa bafHe' a'nd the inner surface of a cone member, sozthatthe liquid each pipe, which is normally closed, but which may be opened to permit the discharge.

From the foregoing description of the various parts of the device the operation thereof may be readily understood.

The cocks 12 are closed and the contents of the tank 10 are permitted to pass through the pipe line into the interior of the inner receptacle. 7 e

The liquid and solids entering the receptacle 4 are caused to come in contact with the baffle 8 in said receptacle andare deflected downwardly. The current passes underneath the battle and thence upwardly between the baflle and the adjacent cone 4 passing out into the next receptacle through the opening 6. Here it is again deflected downwardly, passing underneath the neXt bafiie 8 and thence upwardly between the baflie and its associated cone. It will be observed that the downward movement causes the stream to enter a portion of the still water at the bottom of the baffles. Furthermore, each downward passage is successively slower because of the fact that the area at the base of each successive baflie is progressively greater. After the current has passed around the bottom of the last baflie, it flows upwardly be tween the baffle and the outer cone and thence out through the pipe 7. The action of the current results in a deposit of the matter suspended thereby in successive portions. Since the current is greater in the inner receptacle, the larger particles will be deposited therein, and as the rate of the downward flow is decreased, the smaller particles are deposited so that in the outer receptacle those of the finest grade will be found.

It will be noted that there is a continuous stream which is brought successively into I still water at difierent portions of its travel,

the velocity of this stream being constantly lessened so as to enter the still water at different grades or sizes of particles.

Not only is the downward flow of liquid progressively slower into the successive receptacles, but the outflow of liquid through the pipe 7 is substantially the same as the inflow through pipe 9. What we have succeeded in doing is in providing a device that is so shaped that during the passage of the liquid therethroughthe rate of downward flow is changed so as to deposit the different grades or sizes of material, but the outflow is uniform, thus permitting the 0011- tinuous operation of the device.

It is evident that many slight changes may be made in the arrangement and construction of the parts without departing from the spirit and scope of the invention 1 set forth, and hence we do not wish to be receptacle. ferent velocitles and hence to deposit dif- 2. In a dewaterer and classifier, the combination of a plurality of receptacles arranged one wlthin the other, each receptacle having communication with the other, means for conducting a liquid to one of the receptacles, and means in each receptacle for causing a separation of the particles from the liquid as it passes from one receptacle to another.

3. In a dewaterer and classifier, the com- I bination of a plurality of receptacles, each consisting of two cone-shaped members connected. together at their bases, said receptacles being of varying sizes and arranged one within the other, and having communication with each other, a cone-shaped battle arranged in each receptacle for deflecting the water from the outlet opening of the receptacle, and means for conducting water to one of the receptacles.

4. In a dewaterer and classifier, the combination of a plurality of cone-shaped re- 7 ceptacles having an opening at their apexes,

said receptacles being of varying sizes and arranged one within the other, a coneshaped baffle located in each receptacle beneath the outlet opening and against which the water comes in contact in entering a receptacle, means for conducting water to one of the receptacles, and means for governing the discharge of the collected material of each 7 5. In a dewaterer and classifier a plurality of receptacles, each of said receptacles containing a body of relatively still water and means for causing a slow downward flow of liquid into the still water of each receptacle anda relatively rapid flow of liquid from each receptacle into the adjacent receptacle.v

6. In a dewaterer and classifier a plurality of receptacles, each of said receptacles containing a body of relatively still water and means for causing a slow downward flow of liquid into the still water of each receptacle and a relatively rapid flow of liquid from each receptacle into the adjacent re- .ceptacle, the downward flow of the liquid being progressively slower in the successive receptacles.

7. In a dewaterer and classifier a plurality of receptacles, each of said receptacles containing a body of relatively still water, charge through said discharge pipe being means for causing a slow downward flow substantially that of the rate of flow into the 10 of liquid into the still water of each recepta first receptacle.

cle and a relatively rapid fidw of liquid In testimony whereof we have afiixed our from each receptacle into the adjacent resignatures.

ceptacle, the downward flow of the liquid i being progressively slower in the successive ODIN A. SUNDNESS. receptacles, a discharge pipe, the rate of dis- ROY M. BAKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). 0. 

